sponsored by macneil/lehrer productions >> ifill: the obama administration says consumers will have an easier time using healthcare.gov now that it's fixed the major glitches. but insurers warn problems still exist when confirming coverage. good evening, i'm gwen ifill. >> woodruff: and i'm judy woodruff. also ahead this monday, the uproar in ukraine, protesters who want closer ties with europe now control a public square in the heart of the capital, as they call for the heads of government to resign. >> ifill: and spencer michels profiles david hockney, the prolific artist who continues to innovate using technology to advance his work. >> hockney, at 76, shows no signs of slowing down, and in